BiotechKhaga · Class 6-8
Micropropagation: paudhon ki nakal banane ki science
Ek hi accha kele ka paudha, aur usse hazaaron copy — yeh kaise mumkin hai?
Socho pehle… phir dekho jawab
Isse 'tissue culture' ya 'micropropagation' kehte hain — paudhe ka ek chhota, healthy tukda khaas, saaf lab mein khaas khaane (nutrient medium) ke saath badhaya jaata hai, jab tak woh poora naya paudha na ban jaaye.
Process: chhota tukda (explant) lekar use sterilise (saaf) kiya jaata hai. Phir use ek jelly jaisi khaas nutrient medium wali botal mein rakha jaata hai, jismein khaana aur growth hormones hote hain. Kuch hafton mein chhote-chhote naye paudhe (plantlets) banne lagte hain, jinhe baad mein mitti mein shift kiya jaata hai.
Kyun karte hain: agar seed se paudha ugaya jaaye toh har paudha thoda alag ho sakta hai. Par tissue culture se sab ek jaisa aur original paudhe jaisa healthy banta hai — bimari se bhi bacha hua, kyunki poori prakriya saaf jagah mein hoti hai.
Kaha use hota hai: kele, orchid (phool) aur aloo jaise crops mein tissue culture bahut aam hai, kyunki inhe seed se lagana mushkil ya kam bharosemand hota hai.
Ghar pe try karo
Ghar par money-plant ya pudina ki daali se 'cutting propagation' try karo (bade ki madad se): daali ko paani mein rakho, jaden aane tak roz dekho, phir usse gamle mein lagao.
Wow!
Duniya bhar mein khaaye jaane wale zyaadatar kele tissue-culture se banaye gaye ek jaise paudhon se aate hain!
3 sawaal
- Explant kya hai?
Jawab dekho
Paudhe ka chhota, healthy tukda. Explant paudhe ka woh chhota tukda hai jise tissue culture mein liya jaata hai.
- Seed se ugaaye paudhon ki tulna mein tissue culture ke paudhe kaise hote hain?
Jawab dekho
Ek jaise aur predictable. Tissue culture se ek jaisa aur predictable, healthy paudha banta hai.
- Tissue culture kaha zyada use hota hai?
Jawab dekho
Kele, orchid, aloo jaise crops mein. Yeh un crops mein aam hai jinhe seed se lagana mushkil hota hai.
NCERT se jodo: NCERT Class 7/8 Science — reproduction in plants (vegetative propagation)